java.lang.NullPointerException
	at java.lang.String.compareTo(String.java:997)
	at java.lang.String.compareTo(String.java:90)
	at java.util.TreeMap.compare(TreeMap.java:1093)
	at java.util.TreeMap.getEntry(TreeMap.java:347)
	at java.util.TreeMap.get(TreeMap.java:265)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport.buildGlobalComponentIndex(GlobalComponentsIndexSupport.java:320)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport.run(GlobalComponentsIndexSupport.java:281)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to
	at org.openide.util.RequestProcessor.post(RequestProcessor.java:321)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport.buildIndex(GlobalComponentsIndexSupport.java:272)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport.initiateIndexRebuld(GlobalComponentsIndexSupport.java:262)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport.access$100(GlobalComponentsIndexSupport.java:76)
	at org.netbeans.modules.xml.schema.model.impl.GlobalComponentsIndexSupport$1.childrenAdded(GlobalComponentsIndexSupport.java:196)
	at org.netbeans.modules.xml.xam.ComponentEvent$EventType$2.fireEvent(ComponentEvent.java:81)
	at org.netbeans.modules.xml.xam.AbstractModel$Transaction.fireCompleteEventSet(AbstractModel.java:516)
	at org.netbeans.modules.xml.xam.AbstractModel$Transaction.fireEvents(AbstractModel.java:474)
	at org.netbeans.modules.xml.xam.AbstractModel.endTransaction(AbstractModel.java:321)
	at org.netbeans.modules.xml.xam.AbstractModel.endTransaction(AbstractModel.java:313)
	at org.netbeans.modules.xml.xam.AbstractModel.sync(AbstractModel.java:260)
	at org.netbeans.modules.xml.xam.AbstractModel$1.run(AbstractModel.java:652)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1084)